— I missed the earliest flight in the morning. It was really a pity. —You _________ to the airport by taxi instead of by bus.

 ---Who’s the man over there? Is it Mr. Black?--- It _________ be him. He’s much taller.

These shoes aren’t comfortable. You __________ wear them.

---Mum, could I go shopping with you? --- Yes,________ . But you have to finish your homework first.

Tom’s score on the test is the highest in the class. He _____.